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Originally Posted by oldbeaver
The car runs on pure hydrogen. The problem is at time they produce hydrogen.
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That is simply burning hydrogen, not trying to use it as a "catalyst" for gasoline or diesel fuel.
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How do you know that it "costs" the same 128 kcal to reverse the reaction?
It may cost more or less, with some heat coming or leaving, for example.
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The 128 kCal is the
absolute least it could possibly cost, the minimum amount of energy it takes to "knock loose" the hydrogen from the oxygen. In practice, it
will take more than that, because none of these systems can be absolutely 100% thermodynamically efficient. Nothing is, as far as physics can determine...
Testing is good. Set up a reliably repeatable test that shows meaningful results. You may yet surprise us all--but it's not necessarily the way to bet.
-soD